A new approach to geophysical real-time measurements on a deep-sea floor using decommissioned submarine cables

被引：1

作者：

Junzo Kasahara

Toshinori Sato

Hiroyasu Momma

Yuichi Shirasaki

机构：

[1] University of Tokyo,Earthquake Research Institute

[2] JAMSTEC (Japan Marine Science and Technology Center),undefined

[3] KDD R & D Laboratories,undefined

来源：

Earth, Planets and Space | 1998年 / 50卷

关键词：

Hydrophone; Ocean Bottom Seismometer; Submarine Cable; Broadband Seismometer; Hydrophone Array;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to better understand earthquake generation, tectonics at plate boundaries, and better image the Earth’s deep structures, real-time geophysical measurements in the ocean are required. We therefore attempted to use decommissioned submarine cables, TPC-1 and TPC-2. An OBS was successfully linked to the TPC-1 on the landward slope of the Izu-Bonin Trench in 1997. The OBS detected co-seismic and gradual changes during a Mw 6.1 earthquake just below the station at 80 km depth on November 11, 1997. A pressure sensor co-registered a change equivalent to 50 cm sea-level change. This suggests a high possibility detecting silent earthquakes or earthquake precursors if they exist.

引用

页码：913 / 925

页数：12

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